From owner-freebsd-current Wed May 12 13:48:37 1999 Delivered-To: freebsd-current@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2]) by hub.freebsd.org (Postfix) with ESMTP id 287731550F for ; Wed, 12 May 1999 13:48:35 -0700 (PDT) (envelope-from dillon@apollo.backplane.com) Received: (from dillon@localhost) by apollo.backplane.com (8.9.3/8.9.1) id NAA88350; Wed, 12 May 1999 13:48:13 -0700 (PDT) (envelope-from dillon) Date: Wed, 12 May 1999 13:48:13 -0700 (PDT) From: Matthew Dillon Message-Id: <199905122048.NAA88350@apollo.backplane.com> To: Peter Wemm Cc: current@FreeBSD.ORG Subject: Re: problem with dev_t changes and pageout.. References: <19990511222604.172D71F73@spinner.netplex.com.au> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Maybe whoever committed the supposedly innocuous dev_t changes should back it out. Just a thought. -Matt Matthew Dillon : :It looks like something has come unstuck: : :Fatal trap 12: page fault while in kernel mode :mp_lock = 00000002; cpuid = 0; lapic.id = 00000000 :fault virtual address = 0x28 :fault code = supervisor read, page not present :instruction pointer = 0x8:0xc017bb67 :stack pointer = 0x10:0xc5d97de4 :frame pointer = 0x10:0xc5d97df0 :code segment = base 0x0, limit 0xfffff, type 0x1b : = DPL 0, pres 1, def32 1, gran 1 :processor eflags = interrupt enabled, resume, IOPL = 0 :current process = 2 (pagedaemon) :interrupt mask = net bio cam <- SMP: XXX :kernel: type 12 trap, code=0 :Stopped at spec_strategy+0x93: movl 0x28(%edx),%eax : ^^^^^^^^^^^ %edx = null :db> trace :spec_strategy(c5d97e1c) at spec_strategy+0x93 :swap_pager_putpages(c02904fc,c5d97ecc,2,0,c5d97e60) at swap_pager_putpages+0x3e1 :default_pager_putpages(c02904fc,c5d97ecc,2,0,c5d97e60) at default_pager_putpages+0x17 :vm_pageout_flush(c5d97ecc,2,0,c5d97eb0,c02182cf) at vm_pageout_flush+0x91 :vm_pageout_clean(c04d6b60,80000000,c013e290,2000,c5d97f78) at vm_pageout_clean+0x1f1 :vm_pageout_scan(80000000,c02789c0,c02789c0,c5d97fac,c013e2c3) at vm_pageout_scan+0x45e :vm_pageout(c5d8fdf7,c0255500,c02789c0,c020c640,c020c748) at vm_pageout+0x221 :kproc_start(c02789c0) at kproc_start+0x33 :fork_trampoline(10b8a0,d88e0000,18b8c08e,8e000000,24448be0) at fork_trampoline+0x30 :db> ps : pid proc addr uid ppid pgrp flag stat wmesg wchan cmd : 438 c680da40 c6818000 495 282 277 000004 3 biord c332d9c0 p4d : 437 c5d8c340 c6802000 433 417 415 004084 3 piperd c6760660 tee : 436 c680dd00 c6810000 433 417 415 004004 3 biord c33626f8 p4 : 418 c680dba0 c6815000 433 415 415 004084 3 piperd c6760700 mail : 417 c680de60 c680e000 433 415 415 004084 3 wait c680de60 sh :[..] : :The offending line in spec_strategy is: : (*bdevsw(bp->b_dev)->d_strategy)(bp); : :d_strategy was null.. I'm still looking. : :(I think this is the first time the box paged out since booting a few hours :ago, it's got 128M, but p4d has got a lot of stuff to deal with and can hit :a vsize of 70MB or so.) : :Cheers, :-Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message